Clutch



Odi. 23, 1945. P CROSMAN v 2,387,648

CLUTCH Filed Oct. 2, 1943 @alu/115mm vdm.

Patented Oct. 23, 1945 UNITED sTATEsPATE-NT OFFICE --,G LU'rcn4 LoringPickering Croslnan, "South Orange, JL,

assi'gnor VtoMonroeV Calculating Machine Company, Orange, N. J'., a corporation of Delaware I Aoplicationociebefz, 1943, serial No. 504,765

` IZGla'ims. (VCI. 192-48) The invention relates to clutcheswvherein a 4 driving shaft is provided .with a driving connection with one or alternatively thefother of two members loose thereon in accord with the direction of the shift of coupling elements of a mem.-

ber fast upon said shaftan objectief the inven'.- .tion being to provide an improved deviceof .this description having means for eifecting the shift and for locking the one loose member against rotation and for simultaneously locking the vdrive ing connection with the other loose member dur, ing a cycle of rotation. Another object is topro, vide means for driving. either the main shaft'of 1a Monroe calculating machine -or theV shaft `of the device for shifting the carriage of said machine, but never both at the same time. Other objects and advantages will appearhereinafter or will be obvious.

T he invention consists in thenoyel construction and combination of parts as herein `set `forth in `the claims I I In the accompanying drawing: VFigure 1 is afront elevation of the clutch. Figure 2 is a side elevation of the sameshowing one Qf the loose members having driving connerie tion with the `drive shaft, parts beine shown in dotted lines; l l Figure 3 is` a view similar to .Fig- 2, with parts brokenaway, showing the other loose member having driving `connection with the drive shaft. Figure 4 is a `section on the line 4.-4 F ig. 2. Figure 5 is ar section on the ,line 'S1-5, Fig. 3. 11n the drawing, the numeral I designates a driving shaft, which may be reversible, and Whereon are loosely mounted two hollow .cylindrical cupped spaced `clutch members 2,' 2, the open ends of which face each other, providing a boxing wherein works Athe fast member of the clllth e having the shiftable coupling elements to bedescribed, said loose members having each an inner circumferential outwardly extending flange 13 and a radial circumferential slot 4,

Said fast member cf the clutch includes a crank arm 8 fast-upon the drive shaft I'; shiftable coupling elements Vconnected together to work in unison and including links B, B,` each lr` ivoted at one end thereof at I to said crank arm; a frame `Il with which the opposite ends of said links have pivotal connection at I0, I0, and voppositely eX- tending lateral rollers II, II, journaled at opposite ends of and upon opposite sides'ofsaid frame 9; The pivots II), I0 are spaced apart by a distance which is less than that between the pivots 1, l, whereby in theshifting of said coupling-elements said rollers I I, III willbe respectively thrust efe outwardly into theV radial slot l` of and Vestalilish a driving connection Awith one oralternatively the other of said loose members 2, 2, in accord with the direction of the shift andthe roller not so thrust outwardly `v/ill be withdrawn inwardly within the interior of the related member..

shiftable control means includes a bell crank l2 located adjacent to and opposite the space 2 `separating the loose clutch members `2, 2, said bell crank being fast upon `and rockable with@` shaft I3 having bearings in the stationary frame (not shown), said bell crank being provided at the free ends of its arms with oppositely extending lateral rollers I4, I4, contacting the rollers II, I I, of the shiftable coupling elements, one roller I4 of the bell crank engaging the radial slot 4 ofone of the loose clutch members 2 to lock the latter against rotation and the'other roller I4 of the bell crank simultaneously riding uponlthe `outer periphery of and locking thedriving connection with the other loose clutch member .2. during a cycle of rotation. Y

The two pairs vof rollers II, Il and I4, I4, are located in registration with the slots 4, 4, of the loose clutch members 2, 2, only at the .Start of and at the nish of the cycle of rotation, so that the drive being once started it is only at the finish of the cycle of rotation that any shifting of the cou.. pling elements is possible from theorie member 2 to the other.

The frame 9 is composed of three spaced bars I5, I6 and I1, rivetedtogether by four pins IIJ, I0, I8 and I9, also spaced apart. The pin I8 hasthe one roller II journaled thereon and is riveted to the bars I5 and I6. `The pin I9 has theother roller II journaled thereon and is riveted to the bars I6 and I1. vThe two remaining pins I0, II)l have the adjacent ends of the links 6, E, pivcted thereon and are riveted to the bar s I5 and I7;

also passing through perforations' of the middle bar I6.

Due to the fact that the shift of the one roller causing undue friction and wear. In the Monroe machine, the main shaft would have a driving connection with one. of theloose members v2,`fand the shaft of the device for shifting the carriage of said machine would have a driving connection with the other loose member 2.

An object of the use of rollers for the shiftable control mean`s and for the shiftable coupling elements is that precise relative positioning of the shafts l and I3 may be rendered unnecessary.

It will be noted that this clutch has'no neutral position, one of the members 2 always having a driving connection with the drive shaft but never both members 2.

Obviously the invention Will remain effectiveV for the purpose stated for an indenite'number of cycles of rotation so long as the control means remains in operative position. Obviously also the control means would be shifted when the'parts are in position of rest.

I claim:

1. In a clutch, a drive shaft, two annular driven members loosely mounted thereon and provided each with a seat, a driving'member fast upon said shaft 'and having coupling elements shiftable to engage aseat of and establish a driving connectionV withone or alternatively the other of said lose members in accord withA the direction of the shift, Vandshiftable control'means having locking elements contacting said coupling elements, one locking element of said control means engaging a seat of one of said loose members to lock the latter against rotation, andl the other locking element simultaneously riding upon the outer` periphery of and locking the driving connection with the other loose member during a cycle of rotation. Y s j 2V. In Va clutch, a reversible drive shaft, vtwo annular driven members loosely mounted thereon and provided each with a seat, a ,driving ymember fast upon said shaft and having coupling elements shiftable to engage a seat of and establish a driving connection with one or alternatively the other of said loose members in accord vwith the directionof the shift, and shiftable-control means having locking elements contacting. saidV coupling elements, one locking element of said control means engaging a seat of one'of said loose members' to lock the latter against rotation, and the otherlocking element simultaneously riding upon the outer periphery of and locking the driving connection with the other loose member during a cycle of rotation. Y

3. In a clutch, a driving shaft, `two annular driven. members loosely mounted thereon and provided each with a slot, a driving member fast upon said shaft and having coupling elements including rollers, said elements being shiftable to engage said rollersrespectively with a slot of and establish a driving connection with one or alternatively the other of said loose members in accord with the direction of the shift,and shiftable control means having rollers contacting the rollers of the coupling elements, one roller of the control means engaging the slot of one of said loose members to lock the same against rotation and the other roller of the control means simultaneously riding upon the outer periphery ofland locking the driving connection with the other loose member during a cycle of rotation. i 4. In a clutch, a reversible driveshaft, two annular driven members loosely mounted thereon and provided each with a slot, a driving member fast upon said shaft and having'coupling elements including rollers, said elements being shiftable torengage said rollers respectively with'a slot off and-establish a driving connection with one driven members loose upon said shaft and provided each with a radialslot, a driving member fast upon said shaft and having coupling elementsjincluding rollers, said elements being shiftable 'to'shiftsaid rollers respectively radially of one or alternatively the other of said loose members in accord with the direction of the shift to engage said rollers respectively with the slot of and establish `a driving connection with one or alternativelythe otherof said loose members, and fshiftable controlmeans having 'rollers contacting the rollers of the coupling elements, oneroller 'of the control means engaging the slot of Vone of the yloose members to lock the sameagainst rotationV and the other roller of the control means simultaneously riding upon the periphery of and locking the drivingwconnection with the other loose member during a cycle ,ofrotatiom the roll,- ers'of the Vcoupling elements havingrespectively driving-engagement with a wall of the slot of the related loose member at right angles tothe radial 'shifting movement of the roller. V

6. In a clutch, a drive shaft, two annular driven members loosely mounted thereon and provided eachiwith a radial slot, a l'crank arm fast Vupon said'shaft, shiftable coupling elements including two links pivoted atoneend thereof. to said crank arm, a frame with which the `other endsof said links have pivotal connection, and oppositely ektending lateral rollers journaled at the opposite ends of and uponv opposite sides of said fremd-the pivots of `said links to said frame being spaced apart by a distance which is lessthan that be tween the pivots of said linksoto said crank arm 'whereby in the shifting of said couplingjelements said rollers will be respectively-thrust Voutwardly into the slot of and establishja drivingY connection with one or'alternatively thejother of said looseimembers in accord with the direction cf the shift, and shiftable control means including a rock shaft journaled in the stationary frame, and aQj-bell crank upon said rock shaft having oppositely extending lateral rollers contactingthe rollers of said coupling elements, one rollerof .said bell crank engagingthe slot of one of said loose members tolock the latter against rotation and the other roller of the bell crank simultaneously riding upon. thev periphery of and Vlocking the driving connection with the other of said loose members during a cycleof rotation.` I lIn a clutch, a drive shaft, two annular driven members loosely mounted thereon and provided each-.with a radial slot,y a crank `arm-fast` upon said shaft, shiftable coupling elements including two links pivoted at one end thereof to said crank arm, a -frame with which the other ends of said links have pivotal connection, and oppositelyextending lateral rollers journaled-attheopposite ends of andV upon opposite sides of said frame, the pivotsv of said links to said frame being spaced apartby adi-stance which is less than that be-A tween'the pivots of said links to said crank arm whereby inthe shifting of said'coupling elements other roller of the bell crank simultaneously riding upon the periphery of and locking the driving connection with the other of said loose members during a cycle of rotation, said rollers in the shifting of said coupling elements having movement radially of said loose members and having respectively driving engagement With a Wall of the slot of the related loose member at right angles to the radial shifting movement of the roller.

LORING PICKERING CROSMAN. 

